Expert Witness
Independent cardiovascular expertise for complex medical matters.
Dr. Marmur’s expert work is grounded in extensive clinical practice, academic cardiology, interventional experience, medical research and scientific literature.
Cardiology Expert Review · Medical Consulting · Testimony
Jonathan D. Marmur, MD
01
Current Leadership
Chair of Cardiology
NYC Health + Hospitals / Elmhurst
02
Interventional Cardiology
Board-Certified
Academic + Clinical Practice
03
Academic Medicine
25+ Years
Clinical, Research & Teaching
04
Research & Publications
Clinical Evidence
Scientific Literature
Expert Review
Complex cardiovascular questions require experienced clinical judgment.
Expert medical review calls for the ability to interpret records, imaging, clinical decisions, risk factors and medical evidence within the complete cardiovascular context. Dr. Marmur’s perspective draws on decades of patient care, academic leadership and clinical research.
Areas of Expert Review
Focused cardiovascular review, grounded in evidence.
01
Medical Record Review
Structured review of relevant records and cardiovascular history.
→
02
Cardiovascular Imaging & Diagnostic Review
Interpretation of diagnostic information within clinical context.
→
03
Interventional Cardiology Matters
Review informed by interventional cardiology expertise.
→
04
Cardiovascular Risk & Prevention
Evaluation of risk factors and prevention considerations.
→
05
Standard-of-Care Analysis
Consideration of clinical decisions against applicable standards.
→
06
Medical Literature & Evidence Review
Review of relevant scientific literature and medical evidence.
→
Engagement
A structured approach to expert medical review.
01
Initial Case Inquiry
02
Conflict / Scope Review
03
Medical Record Assessment
04
Literature & Evidence Review
05
Written Opinion
06
Deposition / Trial Support
Clinical & Academic Foundation
Expert opinion grounded in clinical and academic medicine.
Dr. Marmur’s professional perspective is shaped by clinical leadership, interventional cardiology, research, teaching and sustained engagement with the cardiovascular literature.
2026 — Present
Chair of Cardiology
NYC Health + Hospitals / Elmhurst
2003 — 2026
Director of Interventional Cardiology
SUNY Downstate
2016 — 2021
Chief of Cardiology
SUNY Downstate
Current
Professional Standards
ABIM Interventional Cardiology Committee
Professional CV
Review Dr. Marmur’s academic and professional credentials.
Professional Inquiry
Discuss a cardiovascular medical matter.
For attorneys and medical professionals seeking independent cardiovascular expert review.
© 2026 Jonathan D. Marmur, MD. All rights reserved.
Privacy
Accessibility
Terms
Expert Witness
Independent cardiovascular expertise for complex medical matters.
Dr. Marmur’s expert work is grounded in extensive clinical practice, academic cardiology, interventional experience, medical research and scientific literature.
Cardiology Expert Review · Medical Consulting · Testimony
Jonathan D. Marmur, MD
01
Current Leadership
Chair of Cardiology
NYC Health + Hospitals / Elmhurst
02
Interventional Cardiology
Board-Certified
Academic + Clinical Practice
03
Academic Medicine
25+ Years
Clinical, Research & Teaching
04
Research & Publications
Clinical Evidence
Scientific Literature
Expert Review
Complex cardiovascular questions require experienced clinical judgment.
Expert medical review calls for the ability to interpret records, imaging, clinical decisions, risk factors and medical evidence within the complete cardiovascular context. Dr. Marmur’s perspective draws on decades of patient care, academic leadership and clinical research.
Areas of Expert Review
Focused cardiovascular review, grounded in evidence.
01
Medical Record Review
Structured review of relevant records and cardiovascular history.
→
02
Cardiovascular Imaging & Diagnostic Review
Interpretation of diagnostic information within clinical context.
→
03
Interventional Cardiology Matters
Review informed by interventional cardiology expertise.
→
04
Cardiovascular Risk & Prevention
Evaluation of risk factors and prevention considerations.
→
05
Standard-of-Care Analysis
Consideration of clinical decisions against applicable standards.
→
06
Medical Literature & Evidence Review
Review of relevant scientific literature and medical evidence.
→
Engagement
A structured approach to expert medical review.
01
Initial Case Inquiry
02
Conflict / Scope Review
03
Medical Record Assessment
04
Literature & Evidence Review
05
Written Opinion
06
Deposition / Trial Support
Clinical & Academic Foundation
Expert opinion grounded in clinical and academic medicine.
Dr. Marmur’s professional perspective is shaped by clinical leadership, interventional cardiology, research, teaching and sustained engagement with the cardiovascular literature.
2026 — Present
Chair of Cardiology
NYC Health + Hospitals / Elmhurst
2003 — 2026
Director of Interventional Cardiology
SUNY Downstate
2016 — 2021
Chief of Cardiology
SUNY Downstate
Current
Professional Standards
ABIM Interventional Cardiology Committee
Selected Research
Selected cardiovascular research
2022
Impact of New-Onset Versus Pre-Existing Atrial Fibrillation on Outcomes After Transcatheter Aortic Valve Replacement / Implantation
International Journal of Cardiology: Heart & Vasculature
2020
A Contemporary Review of Antithrombotic Therapy Following Percutaneous Coronary Intervention
Journal of Clinical Medicine
2018
Clinical Outcomes Following Transcatheter Aortic Valve Replacement in a High-Risk Cohort
Cardiovascular Revascularization Medicine
Review Dr. Marmur’s academic and professional credentials.
Professional CV
Professional Inquiry
Discuss a cardiovascular medical matter.
For attorneys and medical professionals seeking independent cardiovascular expert review.
Author
Controlling the Agenda
Amazon ↗
Audible ↗
© 2026 Jonathan D. Marmur, MD. All rights reserved.
Privacy
Accessibility
Terms
Expert Witness
Independent cardiovascular expertise for complex medical matters.
Dr. Marmur’s expert work is grounded in extensive clinical practice, academic cardiology, interventional experience, medical research and scientific literature.
Jonathan D. Marmur, MD
Cardiology Expert Review • Medical Consulting • Testimony
01
Current Leadership
Chair of Cardiology
NYC Health + Hospitals / Elmhurst
02
Interventional Cardiology
Board-Certified
Academic + Clinical Practice
03
Academic Medicine
25+ Years
Clinical, Research & Teaching
04
Research & Publications
Clinical Evidence
Scientific Literature
Expert Review
Complex cardiovascular questions require experienced clinical judgment.
Expert medical review calls for the ability to interpret records, imaging, clinical decisions, risk factors and medical evidence within the complete cardiovascular context. Dr. Marmur’s perspective draws on decades of patient care, academic leadership and clinical research.
Areas of Expert Review
Focused cardiovascular review, grounded in evidence.
01
Medical Record Review
→
Structured review of relevant records and cardiovascular history.
02
Cardiovascular Imaging & Diagnostic Review
→
Interpretation of diagnostic information within clinical context.
03
Interventional Cardiology Matters
→
Review informed by interventional cardiology expertise.
04
Cardiovascular Risk & Prevention
→
Evaluation of risk factors and prevention considerations.
05
Standard-of-Care Analysis
→
Consideration of clinical decisions against applicable standards.
06
Medical Literature & Evidence Review
→
Review of relevant scientific literature and medical evidence.
Engagement
A structured approach to expert medical review.
01
Initial Case Inquiry
02
Conflict / Scope Review
03
Medical Record Assessment
04
Literature & Evidence Review
05
Written Opinion
06
Deposition / Trial Support
Clinical & Academic Foundation
Expert opinion grounded in clinical and academic medicine.
Dr. Marmur’s professional perspective is shaped by clinical leadership, interventional cardiology, research, teaching and sustained engagement with the cardiovascular literature.
2026 — Present
Chair of Cardiology
NYC Health + Hospitals / Elmhurst
2003 — 2026
Director of Interventional Cardiology
SUNY Downstate
2016 — 2021
Chief of Cardiology
SUNY Downstate
Current
Professional Standards
ABIM Interventional Cardiology Committee
Selected Research
Selected cardiovascular research
2022
Impact of New-Onset Versus Pre-Existing Atrial Fibrillation on Outcomes After Transcatheter Aortic Valve Replacement / Implantation
International Journal of Cardiology: Heart & Vasculature
2020
A Contemporary Review of Antithrombotic Therapy Following Percutaneous Coronary Intervention
Journal of Clinical Medicine
2018
Clinical Outcomes Following Transcatheter Aortic Valve Replacement in a High-Risk Cohort
Cardiovascular Revascularization Medicine
Professional CV
Review Dr. Marmur’s academic and professional credentials.
Professional Inquiry
Discuss a cardiovascular medical matter.
For attorneys and medical professionals seeking independent cardiovascular expert review.
Author
Controlling the Agenda
Amazon ↗
Audible ↗
© 2026 Jonathan D. Marmur, MD. All rights reserved.
Privacy
Accessibility
Terms